the pentagon noted more than 700,000 civilian military workers, department of defense workers, will effectively lose 20% of their pay. they will have to work one less day a week if this goes in effect. as one observer put it, it's like a low speed car crash heading our way. >> peter alexander from 1600. peter, thank you, sir. >>> wednesday morning the supreme court will hear arguments in a case called shelby county versus holder. it's a case that could determine the future of the landmark voting rights act of 1965. to find out what's at stake, we're going to go ahead and take a reality check on this sunday. peter bacon an msnbc contributor and editor of the grio. let's start at the beginning, if you will, for folks not following the story perhaps. what's at stake here on wednesday? >> the key thing at stake here is this is a law -- this is 1965, that lays out basically for a lot of southern states, states that had a history of discrimination, they had -- the big portion is they have to usually pre-clear any law about voting with the department of justice, and the department has to approve it in